/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
Spawns a PlayFromHere playerstart in the given world
true if spawn succeeded, false if failed
bool SpawnPlayFromHereStart ( [UWorld](API\Runtime\Engine\Engine\UWorld) * World, [AActor](API\Runtime\Engine\GameFramework\AActor) *& PlayerStartPIE, const FVector & StartLocation, const FRotator & StartRotation )